略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: Phar::offsetExists

2024-12-22

Phar::offsetExists

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.0.0)

Phar::offsetExistsDetermines whether a file exists in the phar

说明

public Phar::offsetExists(string $localName): bool

This is an implementation of the ArrayAccess interface allowing direct manipulation of the contents of a Phar archive using array access brackets.

offsetExists() is called whenever isset() is called.

参数

localName

The filename (relative path) to look for in a Phar.

返回值

Returns true if the file exists within the phar, or false if not.

范例

示例 #1 A Phar::offsetExists() example

<?php
$p 
= new Phar(dirname(__FILE__) . '/my.phar'0'my.phar');
$p['firstfile.txt'] = 'first file';
$p['secondfile.txt'] = 'second file';
// the next set of lines call offsetExists() indirectly
var_dump(isset($p['firstfile.txt']));
var_dump(isset($p['nothere.txt']));
?>

以上例程会输出:

bool(true)
bool(false)

参见

add a noteadd a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址:https://www.php.net/manual/en/phar.offsetexists.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3